Parameter setting device and parameter setting system

A parameter setting system comprising:

• a parameter setting device for setting parameters for a unit that constitutes a programmable controller;
• and
• a parameter-setting target unit having a parameter to be set by the parameter setting device, wherein
• the parameter setting device includes
• reference-format definition data for specifying setting items of a parameter regarding a first unit of a predetermined model and a predetermined version,
• first differential-format definition data for specifying setting items of a parameter regarding a second unit of a model or a version different from the model or the version of the first unit with a difference from the reference-format definition data,
• a format-definition-data selection unit that
• determines whether the parameter-setting target unit is the first unit, the second unit, or none of the first unit and the second unit,
• when it is determined that the parameter-setting target unit is the first unit, selects the reference-format definition data, and
• when it is determined that the parameter-setting target unit is the second unit, selects both the reference-format definition data and the first differential-format definition data, and
• a parameter conversion unit that receives an input of parameter setting data, interprets the received parameter setting data based on format definition data selected by the format-definition-data selection unit, and sets the interpreted parameter for the parameter-setting target unit,
• wherein, the parameter-setting target unit includes second differential-format definition data for specifying setting items of a parameter included in its own unit with a difference from the reference-format definition data, and
• when it is determined that the parameter-setting target unit is none of the first unit and the second unit, the format-definition-data selection unit selects the reference-format definition data and the second differential-format definition data included in the parameter-setting target unit.